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Development of a Laser-Produced Plasma X-Ray Source for Phase-Contrast Radiography of D-T Ice Layers

N. Izumi, E. Dewald, B. Kozioziemski, O. L. Landen, J. A. Koch

Fusion Science and Technology

Volume 55 / Number 3 / April 2009 / Pages 253-259


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Refraction-enhanced X-ray phase-contrast imaging is crucial for characterization of deuterium-tritium (D-T) ice layer roughness in optically opaque inertial confinement fusion capsules. Observation of the time development of D-T ice roughness over approximately second timescales requires a bright X-ray source that can produce an image faster than the evolution of the ice surface roughness. A laser-produced plasma X-ray source is one of the candidates that can meet this requirement. Experiments were performed at the Janus laser facility at Lawrence Livermore National Laboratory to assess the characteristics of a laser-produced plasma X-ray source as a potential backlight for in situ target characterization.

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